【正文】 邵陽學院畢業(yè)設(shè)計（論文） I 內(nèi)容提要 眾所周知 ， 電力行業(yè)是國民經(jīng)濟的基礎(chǔ)工業(yè) ， 它的發(fā)展直接關(guān)系到國家經(jīng)濟建設(shè)的興衰成敗 ， 因此有“經(jīng)濟要發(fā)展，電力應(yīng)先行”的口號。隨著經(jīng)濟建設(shè)的發(fā)展，電力行業(yè)也必然要更好的發(fā)展 ， 所以發(fā)電設(shè)備的容量越來越大 ， 而電力行業(yè)的自動化程度也越來越高 ， 相應(yīng)的對系統(tǒng)的安全性 ， 穩(wěn)定性的要求也越來越高 。 本次設(shè)計是我們在校期間進行的一次比較系統(tǒng)、具體、完整的頗為重要的設(shè)計 ，是一次比較綜合的訓練。 本設(shè)計的主要內(nèi)容是設(shè)計主接線并進行方案的技術(shù)經(jīng)濟比較，可靠性指標的定量分析計算，主變的選擇，短路電流計算，電氣設(shè)備的選擇與校驗，配電裝置、廠用電、防雷保護及發(fā)電機和主變保護設(shè)計。本設(shè)計完成設(shè)計說明書和設(shè)計計算書各一份，英文原版翻譯一份，繪制電氣主接線圖、平面布置圖、斷面圖。 在完成此設(shè)計過程中 ， 我們可以學習電力工程設(shè)計、技術(shù)問題研究的程序和方法 ，獲得搜集資料、查閱文獻、調(diào)查研究、方案比較、設(shè)計制圖等多方面訓練 ， 并進一步補充新知識和技能。 通過畢業(yè)設(shè)計，結(jié)合發(fā)電廠電氣部分設(shè)計，進一步鞏固所學的專業(yè)知識，提高理論聯(lián)系實際的能力，為將來走向社會打下堅實基礎(chǔ)。 關(guān)鍵詞： 電力系統(tǒng)、火力發(fā)電廠、主接線、電氣設(shè)備 邵陽學院畢業(yè)設(shè)計（論文） II Smmary As everyone knows, the power industry is the fundamental industry of national economy, its development is directly related to the economic development of the country39。s success, it is economic development, power should be the first slogan. With the development of economic construction, the development of the electric power industry is also bound to be better, so more and more generation capacity of equipment, and the degree of automation of power industry is getting higher and higher, to the corresponding security system, stability requirements are also getting higher and higher. This design is for us during the period of school a more systematic, specific, plete important design, is a more prehensive training. The main content of this design is the design of the main wiring and technical and economic parison, quantitative analysis and calculation of reliability index, the selection of the main transformer, shortcircuit current calculation, electrical equipment choice and verification, power distribution equipment, electricity, lightning protection and generator and main transformer protection design. This design pletes the design specification and design calculations on each one, the original English translation a, draw the main electrical wiring diagram, layout, section map. Upon pletion of the design process, procedure and method we can study on technical problems of electric power engineering design, study, be collected information, consulting literature, investigation, parison, design drawings and other aspects of training, and further add new knowledge and skills. Through the graduation design, bined with the design of electrical power plant, further consolidate professional knowledge, improve the ability of integrating theory with practice, for the future to lay a solid foundation for social. Keywords: electric power systems, thermal power plant, the main wiring and electrical equipment 目 錄 內(nèi)容提要 ........................................................................................................ I Smmary ......................................................................................................... II 第一部分 設(shè)計說明書 .................................................................................. 1 1 電氣主接線設(shè)計 ........................................................................................ 1 主接線的設(shè)計原則和要求 ..................................................................... 1 電氣主接線的設(shè)計 ................................................................................. 2 發(fā)電機的選擇 ........................................................................................ 5 主變壓器的選擇 .................................................................................... 5 2 廠用電設(shè)計 ............................................................................................... 7 廠用電設(shè)計的要求 ................................................................................. 8 廠用電設(shè)計的原則 ................................................................................. 8 廠用電接線的最終確定 ......................................................................... 9 3 短路電流計算 ......................................................................................... 11 短路電流計算的目的和規(guī)定 ............................................................... 11 短路計算步驟 ...................................................................................... 12 4 電氣設(shè)備選擇與校驗 .............................................................................. 15 電氣設(shè)備選擇的一般原則 ................................................................... 15 斷路器的選擇及校驗 ........................................................................... 17 隔離開關(guān)選擇與校驗 ........................................................................... 19 電壓互感器選擇 ................................................................................... 20 電流互感器的選擇與校驗 ................................................................... 22 高壓熔斷器的選擇與校驗 ................................................................... 23 母線的選擇與校驗 ............................................................................... 24 500kV 進出線的選擇與校驗 ............................................................... 26 接地開關(guān)的選擇與校驗 ....................................................................... 27 5 配電裝置設(shè)計 .......................................................................................... 29 配電裝置的分類及其要求 ................................................................... 29 配電裝置的設(shè)計原則及步驟 ............................................................... 30 6 防雷保護設(shè)計 .......................................................................................... 33 避雷器的 類型及作用 ........................................................................... 33 避雷器的選擇 ...................................................................................... 33 7 發(fā)電機、主變保護設(shè)計 .......................................................................... 35 發(fā)電機保護 .......................................................................................... 35 變壓器保護 .......................................................................................... 41 第二部分 設(shè)計計算書 .....................